21–40 of 433 results
Four sightlines through the Milky Way halo

Milky Way

The 10 Million-Degree Gas Around the Milky Way

New observations show ultra-hot gas around the Milky Way. Stellar explosions may have driven this gas out of our galaxy.

New Horizon

Spacecraft and Space Missions

New Horizons' "Alien View" from the Outer Solar System

NASA's New Horizons mission deep in the Kuiper Belt has measured the parallax to two nearby stars with the help of Earth-based observers.

Milky Way halo

Galaxies

Galaxies Are Even Bigger Than You Think

Galaxies swim in hot gas that extends much farther out than their stars — and plays an important role in the galaxy's evolution.

SPHERE image of AB Aurigae

Exoplanets

Astronomers Witness the Birth of Planets

Two new sets of observations show astronomers what planet formation looks like.

Artist's concept of early disk galaxy

Galaxies

Rotating Disk in Early Universe Explains Galaxy Formation

The discovery of a stably rotating disk galaxy in the early universe is the best indicator yet for how galaxies like the Milky Way formed.

OJ 287 (artist's concept)

Black Holes

Black Hole Duo Flares Right on Time

Astronomers have forecast a flare from a supermassive black hole duo 3.5 billion light-years away.

Magnetar

Stellar Science

Milky Way Magnetar Makes Fast Radio Burst

Fast radio bursts are mysterious — and powerful — flashes of radio waves. Now, we've found one of these flashes coming from a magnetar in our own galaxy.

An arm to the sun

Spacecraft and Space Missions

Details of SpaceX's Starlink "VisorSat" Revealed

SpaceX has revealed new details on its plans to darken the Starlink satellites.

Star-forming outflow in a Milky Way-like galaxy

Milky Way

Is the Milky Way Throwing Out Forming Stars?

Some of the scant stars dwelling in the Milky Way's halo may have an unexpected origin: They may come from the galaxy itself.

USGS Geologic Map of the Moon

Solar System

New, Incredibly Detailed Geologic Map of the Moon

The U.S. Geological Survey (USGS) has released a new 1:5,000,000 map of the Moon that provides a wealth of information about its surface.

Asteroid collision

Exoplanets

Fomalhaut b: Exoplanet or Puff of Dust?

Is Fomalhaut b “the planet that never was”? Astronomers continue to contest the nature of this directly imaged object around a nearby star.

Magnetic channels in distant galaxy

Galaxies

Vast Magnetic "Strings" Puzzle Astronomers

New observations have revealed plasma strung along vast magnetic "strings" crossing hundreds of thousands of light-years.

Starlink constellation around Earth

Spacecraft and Space Missions

Starlink and the Astronomers: An Update

As Starlink satellites continue to enter low-Earth orbit — there are 360 of them now — SpaceX is working to mitigate the serious problems they pose for astronomy.

Cosmology

A Mysterious X-ray Signal Has Gone Missing

The absence of a mysterious X-ray signal — which could have provided evidence of dark matter — is causing as much controversy as its detection did.

The Milky Way's warp

Milky Way

The Milky Way’s Warped Tutu Twirls Every 600 Million Years

Astronomers have known for decades that our galaxy is warped. Now, they can follow the warp’s rotation as it travels around the galactic center.

Two neutron stars prior to merger

Stellar Science

Gravitational Waves Put Ruler to Neutron Stars

Scientists have combined observations of gravitational waves from a neutron star collision with nuclear theory to shed light on the size and nature of neutron stars.

Massive, dusty, star-forming galaxy

Galaxies

What Snuffed Out Star Formation in This “Monster” Galaxy?

Astronomers have discovered a galaxy that formed five times as many stars as the Milky Way within 2 billion years after the Big Bang — but then quickly quelled any further starbirth.

Celestial News & Events

Do You Love the Stars? Do Some Astronomy This Valentine's Day

Whether you're celebrating Valentine's Day or boycotting it, anyone visiting this site loves the stars. Here's a chance to participate in an effort to make sure future generations love them too.

Parker Solar Probe

Solar System

Parker Solar Probe Releases New Details on Solar Wind

Scientists release a bevy of results from the Parker Solar Probe's first two passes near the Sun, including new details on so-called "rogue waves" in the solar wind.

Zoomed-in Image of the Sun from the Inouye Telescope

Professional Telescopes

First Light from the World's Largest Solar Telescope

The Daniel K. Inouye Solar Telescope has taken its first image of the Sun, a detailed view of our star's boiling gases that far surpasses what was possible before. Science operations are set to begin later this year.

Advertisement
Advertisement
Advertisement
Advertisement